When you create your activity you specify when the signup notices will be sent. But you can also send a notice at any time by following these steps:
1. Log in to www.groupvalet.com (this cannot be done in the app).
2. Scroll down to the activity you want to send a notice for and click "Manage This Activity".
3. Click "Send Signup Notice" and answer the question to determine who should receive the notice.
4. Once you confirm, the notice will be sent within 15 minutes.